Brown Diving Beetle vs Cave ground-beetle

Agabus brunneus compared with Trechus pereirai

Key Differences

• Brown Diving Beetle is Extinct while Cave ground-beetle is Critically Endangered.

Taxonomic Classification

Rank	Brown Diving Beetle	Cave ground-beetle
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Arthropoda (สัตว์ขาปล้อง)	Arthropoda (สัตว์ขาปล้อง)
Class same	Insecta (แมลง)	Insecta (แมลง)
Order same	Coleoptera (อันดับด้วง)	Coleoptera (อันดับด้วง)
Family	Dytiscidae	Carabidae
Genus	Agabus	Trechus
Species	Agabus brunneus	Trechus pereirai

Evolutionary Relationship

Brown Diving Beetle and Cave ground-beetle share a common ancestor at the Order level: Coleoptera. (อันดับด้วง)

Conservation Status

Brown Diving Beetle

EX — Extinct

Cave ground-beetle

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Diving Beetle	Cave ground-beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden.

Cave ground-beetle

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Portugal. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Diving Beetle

The Brown Diving Beetle (Agabus brunneus) is a species in the genus Agabus. It is currently classified as Extinct on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Cave ground-beetle

The Cave ground-beetle (Trechus pereirai) is a species in the genus Trechus. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.